Course-finder.



No. 822,783. I PATENTED JUNE 5, 1906.

J. F. SMITH.

COURSE FINDER.

APPLIUATION FILED OUT. 9, 1905.

Q/vilmuau ZWW JOSEPH F. SMITH, OF EVERETT, WASHINGTON.

COURSE- Specification of Letters Patent.

FINDER.

Patented June 5, 1906.

Application filed October 9,1905. Serial No. 281,915.

To all whom it may concern:

Be it known that I, JosEPH F. SMITH, a l citizen of the United States, residing at Ever l ett, in the county of Snohomish and State of I Vashington, have invented certain new and useful Improvements in CourseFinders; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyl ing drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to nautical instru ments, but more particularly to a course- 'finder; and it has for its object to provide a device of this class which is particularly simple in its construction, easy and cheap to manufacture, strong, durable, and eflicient.

A further object of my invention is to provide a course-finder which can be quickly applied to a mariners chart and which is particularly handy and easy of application under adverse conditions, as when a ship or craft is pitching heavily.

With these objects in view my invention consists in the novel construction of the course-finder and in the compass-cards, so arranged that the course of the ship can be taken therefrom.

Referring to the accompanying drawings, Figure 1 is a view showing course-finder partly open. Fig. 2 is a similar view of device reversed. Fig. 3 is a view showing one leg of device with compass-card thereon. Fig. 4 is a view showing fellow leg and illustrating part of pivot-hinge. Fig. 5 is an edge view of end of leg shown in Fig. 3, and Fig. 6 is an edge view showing end of leg shown in Fig. 4.

Like numerals of reference indicate the same parts throughout the several figures, in

' which- 1 indicates the course-finder, which comprises the stationary arm 2, the lubber-arm 3, the pivot-hinge l, and the two compasscards 5 and 6, secured to the two faces of the pivot-hinge.

Referring particularly to Fig. 5, it will be seen that the section 7 of the hinge 4, secured on the stationary arm 2, is bifurcated or comprises two plates 8 and 9, between which the plate 10 of the hinge-section 11 on'the lubber-arm 3 enters, a suitable pivot-pin holding the two sections together and allowing the arms to swing to one hundred and eighty degrees or until they are parallel.

Referring to the compass-cards 5 and 6, it will be seen that they are identical and are so arranged that the points North and South are on a line with the inner edge of the stationary arm 2, the magnetic needle 12 being illustrated as pointing to the north.

Located on the lubber-arm and pointing to the extreme inner edge of the lubber-arm is an arrow 13, said arrow touching the edge 14 of the compass-card.

Having thus described the several parts of my invention, its operation is as follows: In Fig. 1 the stationary arm 2 is applied to left side of chart and the lubber-arm being swung up until the lubber-point is at North on compass-card, the two arms being paralleled and forming a straight edge. The lubberarm can then be swung to the right over one hundred and eighty degrees, or si teen points of the compass, to the desired angle or point of destination of the vessel, the lubber-point indicating on the compass-card the course the vessel should take.

In Fig. 2 the device is shown reversed; but the operation is the same as above described, with the exception that the stationary arm 2 is placed on the right-hand side of the marincrs chart, the lubber-arm moving to the left across the chart to the desired angle or point of destination.

Having thus described my invention, I do not wish to be understood as limiting myself to the exact construction as herein set forth, as various slight changes may be made there in, and I consider myself clearly entitled to all such changes and modifications.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is-

In a course-finder for indicating on a chart the course of a vessel or ship, the combination of a stationary arm having thereon a hinge-section comprising two plates, a movable lubber-arm having a hinge-section thereon comprising one plate, said plate being pivoted between the said two plates on said stationary arm, a compass-card secured on each of the outer faces of said two plates on the said stationary arm, said compass-card on each of the two plates being so arranged that the north and south points are in line with or In testimony whereof I afl'lx my signature parallel with the inside edge ofhthe sitlid Sffilin presence of two Witnesses.

tionary arm, in suc manner t at W en t e stationary arm is placed north and south on a JOSEPH SMITH 5 chart the movable arm Will indicate courses Witnesses:

to-the east, and by reversing the finder, will HENRY W. HOLMES,

indicate courses to the West. BENJ. W. SHERWOOD. 

